Technology Review highlights 3D Purple America election map

MIT Technology Review this week highlights Robert Vanderbei‘s 3D Purple America map, a nuanced visualization of the 2012 presidential election showing the proportion of people who voted Democrat or Republican, county by county, as a gradient between blue and red. The height of the horizontal bars indicates how many voters are in each county.

Vanderbei’s Purple America website also features an animated gif showing the evolution of the nation’s electoral complexion from 1960 to 2008.